<template>
	<view class="content">
		<view class="navbar" :style="{position:headerPosition,top:headerTop}">
			
			<view class="nav-item" :class="{current: filterIndex === 0}" @tap="tabClick(0)">
				综合排序
			</view>
			<view class="nav-item" :class="{current: filterIndex === 1}" @click="tabClick(1)">
				销量优先
			</view>
			<view class="nav-item" :class="{current: filterIndex === 2}" @tap="tabClick(2)">
				<text>价格</text>
				<view class="p-box">
					<text :class="{active: priceOrder === 1 && filterIndex === 2}" class="yticon icon-shang"></text>
					<text :class="{active: priceOrder === 2 && filterIndex === 2}" class="yticon icon-shang xia"></text>
				</view>
			</view>
			<!-- <text class="cate-item yticon icon-fenlei1" @click="toggleCateMask('show')"></text> -->
		</view>
		<view class="goods-list">
			<view 
				v-for="(item, index) in goodsList" :key="index"
				class="goods-item"
				@click="navToDetailPage(item)"
			>
				<view class="image-wrapper">
					<image :src="item.productimages?baseUrl+item.productimages.piurl:'/static/errorImage.jpg'" mode="aspectFill" @error="onImageError(item)"></image>
				</view>
				<text class="title clamp">{{item.pname}}</text>
				<view class="price-box">
					<text class="price">{{item.prices?item.prices.price:'null'}}</text>
					<text>已售 {{item.salvolu}}</text>
				</view>
			</view>
		</view>
		<uni-load-more :status="loadingType"></uni-load-more>
		
		<view class="cate-mask" :class="cateMaskState===0 ? 'none' : cateMaskState===1 ? 'show' : ''" @click="toggleCateMask">
			<view class="cate-content" @click.stop.prevent="stopPrevent" @touchmove.stop.prevent="stopPrevent">
				<scroll-view scroll-y class="cate-list">
					<view v-for="item in cateList" :key="item.id">
						<view class="cate-item b-b two">{{item.text}}</view>
						<view 
							v-for="tItem in item.child" :key="tItem.id" 
							class="cate-item b-b" 
							:class="{active: tItem.id==cateId}"
							@click="changeCate(tItem)">
							{{tItem.text}}
						</view>
					</view>
				</scroll-view>
			</view>
		</view>
		
	</view>
</template>

<script>
	import uniLoadMore from '@/components/uni-load-more/uni-load-more.vue';
	const defaultQuery={
		page:1,
		pagesize:10,
		stid:null,
		pname:null,
		ptid:null,
		odsort:null
	}
	export default {
		components: {
			uniLoadMore	
		},
		data() {
			return {
				baseUrl:this.$api.baseUrl+'/image/',
				queryList:Object.assign({},defaultQuery),
				cateMaskState: 0, //分类面板展开状态
				headerPosition:"fixed",
				headerTop:"0px",
				loadingType: 'nomore', //加载更多状态
				filterIndex: 0, 
				cateId: 0, //已选三级分类id
				priceOrder: 0, //1 价格从低到高 2价格从高到低
				cateList: [
					{text:'安全防盗门',id:'1',child:[{text:'凯雷德',id:'11'},{text:'盼盼',id:'12'},{text:'帝伦特',id:'13'}]},
					{text:'别墅大门',id:'2',child:[{text:'电泳锌合金',id:'21'},{text:'铸铝卡门',id:'22'},{text:'纯铜门',id:'23'}]},
					{text:'非标大门',id:'3',child:[{text:'城市非标',id:'31'},{text:'新农村非标',id:'32'}]},
					{text:'钛镁合金玻璃门',id:'4',child:[{text:'单门',id:'41'},{text:'对开门',id:'42'},{text:'子母门',id:'43'},{text:'滑门',id:'44'},{text:'不锈钢',id:'45'},{text:'锌合金',id:'46'}]},
					{text:'室内套装门',id:'5',child:[{text:'烤漆门',id:'51'},{text:'竹木铝木门',id:'52'},{text:'免漆门',id:'53'}]},
					{text:'衣柜门',id:'6',child:[{text:'移门',id:'61'},{text:'平开门',id:'62'}]},
					{text:'板材',id:'7',child:[{text:'板材',id:'71'}]},
					{text:'其他',id:'8',child:[{text:'其他',id:'81'}]},
				],
				goodsList: [],
				state:null
			};
		},
		onShow() {
			// #ifdef H5
			this.headerTop = '44px';
			// #endif
		},
		onLoad(options){
			// 首页大类查询
			if(options.ptid){
				this.state=0;
				this.queryList.ptid = options.ptid;
			}
			// 模糊查询
			if(options.pname){
				this.state=1;
				this.queryList.pname=options.pname;
			}
			// 分类页 规格查询
			if(options.stid){
				this.state=2;
				this.queryList.stid=options.stid;
			}
			this.getData();
		},
		onPageScroll(e){
			//兼容iOS端下拉时顶部漂移
			if(e.scrollTop>=0){
				console.log(e.scrollTop);
				this.headerPosition = "fixed";
			}else{
				this.headerPosition = "absolute";
			}
		},
		//下拉刷新
		onPullDownRefresh(){
			this.loadData('refresh');
		},
		//加载更多
		onReachBottom(){
			// this.loadData();
		},
		methods: {
			async getData(state){
				this.queryList.odsort=state?state:null;
				let res;
				switch(this.state){
					case 0:
					res=await this.$api.searchType(this.queryList);
					break;
					case 1:
					res= await this.$api.searchKey(this.queryList);
					break;
					case 2:
					res = await this.$api.selectbyslrlm(this.queryList);
					break
					default:
					this.goodsList = [];
				}
				this.goodsList = res.data.obj.list;
			},
			
			//监听image加载失败
			onImageError(item) {
				item.productimages.piurl = '/static/errorImage.jpg';
			},
			
			//加载商品 ，带下拉刷新和上滑加载
			async loadData(type) {
			
				if(type === 'add'){
					if(this.loadingType === 'nomore'){
						return;
					}
					this.loadingType = 'loading';
				}else{
					this.loadingType = 'more'
				}
				// await this.getData();
				// let goodsList = await this.$test.goodsList;
				// if(type === 'refresh'){
				// 	await this.getData();
				// }
				//销量
				if(this.filterIndex === 1){
					await this.getData(3);
					
				}
				if(this.filterIndex === 0){
					await this.getData();
					
				}
				// 价格升降
				if(this.filterIndex === 2){
				
					if(this.priceOrder == 1){
						await this.getData(2);
					}else{
						await this.getData(1);
					}
				
				}
				
				
				//判断是否还有下一页，有是more  没有是nomore(测试数据判断大于20就没有了)
				// this.loadingType  = this.goodsList.length > 20 ? 'nomore' : 'more';
				if(type === 'refresh'){
					if(loading == 1){
						uni.hideLoading()
					}else{
						uni.stopPullDownRefresh();
					}
				}
			},
			//筛选点击
			tabClick(index){
				// 点击的当前排序
				if(this.filterIndex === index && index !== 2){
					return;
				}
				this.filterIndex = index;
				// 点击的是价格升序还是降序
				if(index === 2){
					this.priceOrder = this.priceOrder === 1 ? 2: 1;
				}else{
					this.priceOrder = 0;
				}
				uni.pageScrollTo({
					duration: 300,
					scrollTop: 0
				})
				this.loadData();
				
			},
			//显示分类面板
			toggleCateMask(type){
				let timer = type === 'show' ? 10 : 300;
				let	state = type === 'show' ? 1 : 0;
				this.cateMaskState = 2;
				setTimeout(()=>{
					this.cateMaskState = state;
				}, timer)
			},
			//分类点击
			changeCate(item){
				this.cateId = item.id;
				this.toggleCateMask();
				uni.pageScrollTo({
					duration: 300,
					scrollTop: 0
				})
				this.loadData('refresh', 1);
				uni.showLoading({
					title: '正在加载'
				})
			},
			//详情
			navToDetailPage(item){
				uni.navigateTo({
					url: `/pages/product/product?pid=${item.pid}`
				})
			},
			stopPrevent(){}
		},
	}
</script>

<style lang="scss">
	page, .content{
		background: $page-color-base;
	}
	.content{
		padding-top: 96upx;
	}

	.navbar{
		position: fixed;
		left: 0;
		top: var(--window-top);
		display: flex;
		width: 100%;
		height: 80upx;
		background: #fff;
		box-shadow: 0 2upx 10upx rgba(0,0,0,.06);
		z-index: 10;
		.nav-item{
			flex: 1;
			display: flex;
			justify-content: center;
			align-items: center;
			height: 100%;
			font-size: 30upx;
			color: $font-color-dark;
			position: relative;
			&.current{
				color: $base-color;
				&:after{
					content: '';
					position: absolute;
					left: 50%;
					bottom: 0;
					transform: translateX(-50%);
					width: 120upx;
					height: 0;
					border-bottom: 4upx solid $base-color;
				}
			}
		}
		.p-box{
			display: flex;
			flex-direction: column;
			.yticon{
				display: flex;
				align-items: center;
				justify-content: center;
				width: 30upx;
				height: 14upx;
				line-height: 1;
				margin-left: 4upx;
				font-size: 26upx;
				color: #888;
				&.active{
					color: $base-color;
				}
			}
			.xia{
				transform: scaleY(-1);
			}
		}
		.cate-item{
			display: flex;
			justify-content: center;
			align-items: center;
			height: 100%;
			width: 80upx;
			position: relative;
			font-size: 44upx;
			&:after{
				content: '';
				position: absolute;
				left: 0;
				top: 50%;
				transform: translateY(-50%);
				border-left: 1px solid #ddd;
				width: 0;
				height: 36upx;
			}
		}
	}

	/* 分类 */
	.cate-mask{
		position: fixed;
		left: 0;
		top: var(--window-top);
		bottom: 0;
		width: 100%;
		background: rgba(0,0,0,0);
		z-index: 95;
		transition: .3s;
		
		.cate-content{
			width: 630upx;
			height: 100%;
			background: #fff;
			float:right;
			transform: translateX(100%);
			transition: .3s;
		}
		&.none{
			display: none;
		}
		&.show{
			background: rgba(0,0,0,.4);
			
			.cate-content{
				transform: translateX(0);
			}
		}
	}
	.cate-list{
		display: flex;
		flex-direction: column;
		height: 100%;
		.cate-item{
			display: flex;
			align-items: center;
			height: 90upx;
			padding-left: 30upx;
 			font-size: 28upx;
			color: #555;
			position: relative;
		}
		.two{
			height: 64upx;
			color: #303133;
			font-size: 30upx;
			background: #f8f8f8;
		}
		.active{
			color: $base-color;
		}
	}

	/* 商品列表 */
	.goods-list{
		display:flex;
		flex-wrap:wrap;
		padding: 0 30upx;
		background: #fff;
		.goods-item{
			display:flex;
			flex-direction: column;
			width: 48%;
			padding-bottom: 40upx;
			&:nth-child(2n+1){
				margin-right: 4%;
			}
		}
		.image-wrapper{
			width: 100%;
			height: 330upx;
			border-radius: 3px;
			overflow: hidden;
			image{
				width: 100%;
				height: 100%;
				opacity: 1;
			}
		}
		.title{
			font-size: $font-lg;
			color: $font-color-dark;
			line-height: 80upx;
		}
		.price-box{
			display: flex;
			align-items: center;
			justify-content: space-between;
			padding-right: 10upx;
			font-size: 24upx;
			color: $font-color-light;
		}
		.price{
			font-size: $font-lg;
			color: $uni-color-primary;
			line-height: 1;
			&:before{
				content: '￥';
				font-size: 26upx;
			}
		}
	}
	

</style>
